mirror of
https://github.com/bsnes-emu/bsnes.git
synced 2025-07-31 15:00:25 +02:00
c434e8a0d5
(there was no r03 release posted to the WIP thread) byuu says: This should provide hardware-accurate mosaic support in the accurate renderer, with the exception that I'm still not sure what mid-frame vertical mosaic or mid-scanline horizontal mosaic writes do. Either the code I have is correct, or it bypasses the mosaic adjust and gives the exact H/V positions. I've also renamed the fast folder to alternative (thinking about naming it simply alt instead), and started on a brand new PPU renderer. So far it's just a barebones setup with some MMIO support and VRAM/OAM/CGRAM writing. I'm not even confident that I can get this to be faster than the current scanline renderer, but it's the only avenue that we have left for any kind of significant bsnes speedup, so I have to try. I'm going to finish up the MMIO stuff first, that way we have a clean slate with no actual rendering. And then from here we can try various different approaches.
156 lines
4.0 KiB
C++
Executable File
156 lines
4.0 KiB
C++
Executable File
#ifdef CPU_CPP
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void CPUDebugger::op_step() {
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bool break_event = false;
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usage[regs.pc] &= ~(UsageFlagM | UsageFlagX);
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usage[regs.pc] |= UsageExec | (regs.p.m << 1) | (regs.p.x << 0);
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opcode_pc = regs.pc;
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if(debugger.step_cpu) {
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debugger.break_event = Debugger::BreakEvent::CPUStep;
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scheduler.exit(Scheduler::ExitReason::DebuggerEvent);
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} else {
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debugger.breakpoint_test(Debugger::Breakpoint::Source::CPUBus, Debugger::Breakpoint::Mode::Exec, regs.pc, 0x00);
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}
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if(step_event) step_event();
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CPU::op_step();
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synchronize_smp();
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}
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uint8 CPUDebugger::op_read(uint32 addr) {
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uint8 data = CPU::op_read(addr);
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usage[addr] |= UsageRead;
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debugger.breakpoint_test(Debugger::Breakpoint::Source::CPUBus, Debugger::Breakpoint::Mode::Read, addr, data);
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return data;
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}
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void CPUDebugger::op_write(uint32 addr, uint8 data) {
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CPU::op_write(addr, data);
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usage[addr] |= UsageWrite;
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usage[addr] &= ~UsageExec;
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debugger.breakpoint_test(Debugger::Breakpoint::Source::CPUBus, Debugger::Breakpoint::Mode::Write, addr, data);
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}
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CPUDebugger::CPUDebugger() {
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usage = new uint8[1 << 24]();
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opcode_pc = 0x8000;
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}
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CPUDebugger::~CPUDebugger() {
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delete[] usage;
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}
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bool CPUDebugger::property(unsigned id, string &name, string &value) {
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unsigned n = 0;
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#define item(name_, value_) \
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if(id == n++) { \
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name = name_; \
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value = value_; \
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return true; \
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}
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//internal
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item("S-CPU MDR", string("0x", strhex<2>(regs.mdr)));
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//$2181-2183
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item("$2181-$2183", "");
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item("WRAM Address", string("0x", strhex<6>(status.wram_addr)));
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//$4016
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item("$4016", "");
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item("Joypad Strobe Latch", status.joypad_strobe_latch);
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//$4200
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item("$4200", "");
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item("NMI Enable", status.nmi_enabled);
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item("H-IRQ Enable", status.hirq_enabled);
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item("V-IRQ Enable", status.virq_enabled);
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item("Auto Joypad Poll", status.auto_joypad_poll_enabled);
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//$4201
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item("$4201", "");
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item("PIO", string("0x", strhex<2>(status.pio)));
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//$4202
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item("$4202", "");
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item("Multiplicand", string("0x", strhex<2>(status.wrmpya)));
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//$4203
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item("$4203", "");
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item("Multiplier", string("0x", strhex<2>(status.wrmpyb)));
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//$4204-$4205
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item("$4204-$4205", "");
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item("Dividend", string("0x", strhex<4>(status.wrdiva)));
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//$4206
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item("$4206", "");
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item("Divisor", string("0x", strhex<2>(status.wrdivb)));
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//$4207-$4208
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item("$4207-$4208", "");
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item("H-Time", string("0x", strhex<4>(status.htime)));
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//$4209-$420a
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item("$4209-$420a", "");
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item("V-Time", string("0x", strhex<4>(status.vtime)));
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//$420b
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unsigned dma_enable = 0;
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for(unsigned n = 0; n < 8; n++) dma_enable |= channel[n].dma_enabled << n;
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item("$420b", "");
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item("DMA Enable", string("0x", strhex<2>(dma_enable)));
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//$420c
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unsigned hdma_enable = 0;
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for(unsigned n = 0; n < 8; n++) hdma_enable |= channel[n].hdma_enabled << n;
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item("$420c", "");
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item("HDMA Enable", string("0x", strhex<2>(hdma_enable)));
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//$420d
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item("$420d", "");
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item("FastROM Enable", status.rom_speed == 6);
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for(unsigned i = 0; i < 8; i++) {
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item(string("DMA Channel ", i), "");
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//$43x0
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item("Direction", channel[i].direction);
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item("Indirect", channel[i].indirect);
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item("Reverse Transfer", channel[i].reverse_transfer);
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item("Fixed Transfer", channel[i].fixed_transfer);
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item("Transfer Mode", (unsigned)channel[i].transfer_mode);
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//$43x1
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item("B-Bus Address", string("0x", strhex<4>(channel[i].dest_addr)));
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//$43x2-$43x3
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item("A-Bus Address", string("0x", strhex<4>(channel[i].source_addr)));
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//$43x4
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item("A-Bus Bank", string("0x", strhex<2>(channel[i].source_bank)));
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//$43x5-$43x6
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item("Transfer Size / Indirect Address", string("0x", strhex<4>(channel[i].transfer_size)));
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//$43x7
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item("Indirect Bank", string("0x", strhex<2>(channel[i].indirect_bank)));
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//$43x8-$43x9
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item("Table Address", string("0x", strhex<4>(channel[i].hdma_addr)));
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//$43xa
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item("Line Counter", string("0x", strhex<2>(channel[i].line_counter)));
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}
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#undef item
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return false;
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}
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#endif
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